1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  * Copyright IBM Corp. 2008
5  *
6  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7  */
8 
9 #ifndef __ASM_PPC_DISASSEMBLE_H__
10 #define __ASM_PPC_DISASSEMBLE_H__
11 
12 #include <linux/types.h>
13 
14 static inline unsigned int get_op(u32 inst)
15 {
16 	return inst >> 26;
17 }
18 
19 static inline unsigned int get_xop(u32 inst)
20 {
21 	return (inst >> 1) & 0x3ff;
22 }
23 
24 static inline unsigned int get_sprn(u32 inst)
25 {
26 	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
27 }
28 
29 static inline unsigned int get_dcrn(u32 inst)
30 {
31 	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
32 }
33 
34 static inline unsigned int get_tmrn(u32 inst)
35 {
36 	return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
37 }
38 
39 static inline unsigned int get_rt(u32 inst)
40 {
41 	return (inst >> 21) & 0x1f;
42 }
43 
44 static inline unsigned int get_rs(u32 inst)
45 {
46 	return (inst >> 21) & 0x1f;
47 }
48 
49 static inline unsigned int get_ra(u32 inst)
50 {
51 	return (inst >> 16) & 0x1f;
52 }
53 
54 static inline unsigned int get_rb(u32 inst)
55 {
56 	return (inst >> 11) & 0x1f;
57 }
58 
59 static inline unsigned int get_rc(u32 inst)
60 {
61 	return inst & 0x1;
62 }
63 
64 static inline unsigned int get_ws(u32 inst)
65 {
66 	return (inst >> 11) & 0x1f;
67 }
68 
69 static inline unsigned int get_d(u32 inst)
70 {
71 	return inst & 0xffff;
72 }
73 
74 static inline unsigned int get_oc(u32 inst)
75 {
76 	return (inst >> 11) & 0x7fff;
77 }
78 
79 static inline unsigned int get_tx_or_sx(u32 inst)
80 {
81 	return (inst) & 0x1;
82 }
83 
84 #define IS_XFORM(inst)	(get_op(inst)  == 31)
85 #define IS_DSFORM(inst)	(get_op(inst) >= 56)
86 
87 /*
88  * Create a DSISR value from the instruction
89  */
90 static inline unsigned make_dsisr(unsigned instr)
91 {
92 	unsigned dsisr;
93 
94 
95 	/* bits  6:15 --> 22:31 */
96 	dsisr = (instr & 0x03ff0000) >> 16;
97 
98 	if (IS_XFORM(instr)) {
99 		/* bits 29:30 --> 15:16 */
100 		dsisr |= (instr & 0x00000006) << 14;
101 		/* bit     25 -->    17 */
102 		dsisr |= (instr & 0x00000040) << 8;
103 		/* bits 21:24 --> 18:21 */
104 		dsisr |= (instr & 0x00000780) << 3;
105 	} else {
106 		/* bit      5 -->    17 */
107 		dsisr |= (instr & 0x04000000) >> 12;
108 		/* bits  1: 4 --> 18:21 */
109 		dsisr |= (instr & 0x78000000) >> 17;
110 		/* bits 30:31 --> 12:13 */
111 		if (IS_DSFORM(instr))
112 			dsisr |= (instr & 0x00000003) << 18;
113 	}
114 
115 	return dsisr;
116 }
117 #endif /* __ASM_PPC_DISASSEMBLE_H__ */
118